import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 666
 * Date: 2022-11-25
 * Time: 15:29
 */
public class test1 {
  
    public static void main1(String[] args) {
        String s = "hello";
        s += " world";
        System.out.println(s); // 输出：hello world
    }
}
